Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
25
health-based violations
67
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| TT | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| TT | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| TT | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| TT | Health-based | Resolved | 2007-05-01 → 2007-05-31 |
| TT | Health-based | Resolved | 2007-05-01 → 2007-05-31 |
| TT | Health-based | Resolved | 2007-05-01 → 2007-05-31 |
| TT | Health-based | Resolved | 2007-05-01 → 2007-05-31 |
| MCL | Health-based | Resolved | 2003-09-01 → 2003-09-30 |
| MCL | Health-based | Resolved | 2003-09-01 → 2003-09-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0053 µg/L | 4/4 | 2024 |
| PFHXS | 0.0067 µg/L | 4/4 | 2024 |
| PFOS | 0.0081 µg/L | 4/4 | 2024 |
| 9Cl-PF3ONS | 0.0034 µg/L | 1/4 | 2024 |
Other contaminants detected
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 17.78 µg/L No EPA limit set
worst single sample: 27.7 µg/L | 153/153 | SYR4 | 2012–2019 |
| Bromoform | 25.84 µg/L No EPA limit set
worst single sample: 39.2 µg/L | 153/153 | SYR4 | 2012–2019 |
| Dibromochloromethane | 28.12 µg/L No EPA limit set
worst single sample: 35.8 µg/L | 153/153 | SYR4 | 2012–2019 |
| Chloroform | 9.12 µg/L No EPA limit set
worst single sample: 24.2 µg/L | 143/153 | SYR4 | 2012–2019 |
| TTHM | 78.65 µg/L 98% of the EPA limit 80 µg/L
worst single sample: 92.1 µg/L | 136/136 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 13.675 µg/L 23% of the EPA limit 60 µg/L
worst single sample: 17 µg/L | 136/136 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 8.1165 µg/L No EPA limit set
worst single sample: 10.7 µg/L | 124/124 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 4.244 µg/L No EPA limit set
worst single sample: 7.81 µg/L | 113/124 | SYR4 | 2012–2019 |
| Fluoride | 930 µg/L 23% of the EPA limit 4000 µg/L
worst single sample: 1140 µg/L | 100/100 | SYR4 | 2012–2019 |
| Copper | 602.6 µg/L 46% of the EPA limit 1300 µg/L
worst single sample: 833 µg/L | 88/91 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 1.802 µg/L No EPA limit set
worst single sample: 2.05 µg/L | 57/124 | SYR4 | 2012–2019 |
| Combined Uranium | 2.48 µg/L 8.3% of the EPA limit 30 µg/L
worst single sample: 3.11 µg/L | 21/21 | SYR4 | 2013–2018 |
| Gross Beta Particle Activity | 7.36 pCi/L No EPA limit set
worst single sample: 11.4 pCi/L | 21/21 | SYR4 | 2013–2018 |
| Trichloroacetic Acid | 2.246 µg/L No EPA limit set
worst single sample: 2.59 µg/L | 17/124 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1010 µg/L 10% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 4.802 pCi/L 32% of the EPA limit 15 pCi/L
worst single sample: 5.95 pCi/L | 15/21 | SYR4 | 2013–2018 |
| Combined Radium (-226 And -228) | 1.2195 pCi/L 24% of the EPA limit 5 pCi/L
worst single sample: 1.46 pCi/L | 14/21 | SYR4 | 2013–2018 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2025 |
| Barium | 80.75 µg/L 4% of the EPA limit 2000 µg/L
worst single sample: 92 µg/L | 6/6 | SYR4 | 2013–2019 |
| Lithium | 19.4 µg/L No EPA limit set | 4/4 | UCMR-5 | 2024 |
| Dichloromethane | 0.5800 µg/L 12% of the EPA limit 5 µg/L | 1/29 | SYR4 | 2012–2019 |
| Selenium | 5.4 µg/L 11% of the EPA limit 50 µg/L | 1/6 | SYR4 | 2013–2019 |
83 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 FtsAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Ponca City Mun Water
Is Ponca City Mun Water tap water safe to drink?
EPA monitoring detected 26 contaminants in Ponca City Mun Water's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Ponca City Mun Water's water?
EPA monitoring detected Bromodichloromethane, Bromoform, Dibromochloromethane, Chloroform, TTHM, and others. The full list with the level and data source for each is above.
How many people does Ponca City Mun Water serve?
Ponca City Mun Water reports serving 27,155 people in Oklahoma, per its EPA record.
Has Ponca City Mun Water had any water quality violations?
The EPA has 67 violations on file for Ponca City Mun Water, of which 25 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.